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Critical Reviews in Oral Biology & Medicine
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14(1):4-12 (2003)     Crit Rev Oral Biol Med
© 2003 International and American Associations for Dental Research

LIPOXINS IN CHRONIC INFLAMMATION

Alpdogan Kantarci and Thomas E. Van Dyke*

Boston University Goldman School of Dental Medicine, Department of Periodontology and Oral Biology, 100 East Newton Street G-05, Boston, MA 02118;

Correspondence: *corresponding author, tvandyke{at}bu.edu

The discovery of endogenous molecules involved in counterregulation of inflammatory responses that may lead to tissue injury provides an opportunity to explore new therapeutic approaches based on manipulation of new pathways. Natural counterregulatory pathways may reduce the possibility of unwanted toxic side-effects. Lipoxins are trihydroxytetraene-containing eicosanoids that are generated within the vascular lumen during platelet-leukocyte interactions and at mucosal surfaces via leukocyte-epithelial cell interactions. During cell-cell interactions, transcellular biosynthetic pathways are the major lipoxin biosynthetic routes, and thus, in humans, lipoxins are formed in vivo during multicellular responses, such as inflammation and asthma. This branch of the eicosanoid cascade generates specific tetraene-containing products that serve as "stop signals" for neutrophils that regulate key steps in leukocyte trafficking and prevent neutrophil-mediated tissue injury. These novel anti-inflammatory lipid mediators also appear to facilitate the resolution of the acute inflammatory response. In this review, recent findings and new concepts pertaining to the generation of lipoxins and their impact on the resolution of acute inflammation, and organ protection from leukocyte-mediated injury, are presented. The parallels and possible associations with periodontal diseases are discussed.

Key Words: Lipoxin • neutrophil • periodontitis • inflammation • host response

Critical Reviews in Oral Biology & Medicine, Vol. 14, No. 1, 4-12 (2003)
DOI: 10.1177/154411130301400102
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